Grafting-tool



2 SheetsSheet 1.

(No Model.)

0. W. HOIT.

GRAFTING TOOL.

No. 354,420. Patented Dec. 14, 1886.

(No Model.) 2 Sheets --Sheet 2.

C. W. HOIT.

GRAFTING TOOL.

No. 354,420. Patented Dec. 14, 1886.

N PETERF. PmIn-Uxlw m lwr. wnhin wn. B4 c,

UNITED STATES PATENT OFFICE.

CHARLES w. norr, or SACRAMENTO, CALIFORNIA.

GRAFTlNG-TOOL.

SPECIFICATION forming part of Letters Patent No. 354,420, dated December14, 1886.

Application filed June 2, 18,86.

To all whom, it may concern.-

Be it known that 1, CHARLES W. Herr, of Sacramento, Sacramento county,State of California, have invented an Improvement in Grafting'Tools; andI hereby declare the following to be a full, clear, and exactdescription of the same.

My invention relates to a grafting tool or device for cutting a kerf ornotch in the limb or stub, and to a corresponding formation of the endof the slip which is to be grafted upon 1t.

Referring to the accompanying drawings for a more complete explanationof my invention, Figure 1 is a view of the tool for cutting the kerf,showing the knife or cutter down. Fig. 2 shows it raised. Fig. 3 is aview of the device for forming the end of the slip. Fig. 4 is a viewshowing the device applied to a stub.

A is a bar or standard, which serves to support and guide the cutter,and also the lever or handle by which it is operated, and the device forremoving the chip, these being contained between the upper parallelsidesof the forked ends. The opposite end of the bar A may be made single,and has upon one edge (which I will call the front) a series ofratchet-teeth, B. A slotted plate, O,'is fitted to slide over the end ofthis bar, the back portion traveling in contact with the rear edge ofthe bar and the front portion projecting sufficient-ly to receive aplate, a, which extends downward between the sides of the slide 0, andhas its lower end formed in a pawl, b, so as to engage the teeth or rackupon the front of bar A. The rear portion of this plate a has asemicircular notch, 0, made in it,which fits around a pin, d, passingthrough the front of the slide 0, and. it is thus prevented from comingout of place. Upon the top of this plate a is fixed a curved transverseplate, 0, which serves as a stub rest or support, against which thecutter acts.

It will be seen that by moving the guide or slide G the stub rest may bemoved near to or farther away from the cutter, and thus brought intoproper position with relation to it, so that it may be regulated to anysize of stub upon which the cut is to be made, and it thus forms aresisting baek,' against which the knife may Serial No. 203,966. (Yomodel.)

be operated by pressure, and all tendency of the stub to spring will beavoided. The 0pposite end of the bar or standard A is formed in twoparallel parts, as before stated, and between these the cutter-bar andthe operating-handle are fitted. The cutter is made of steel, and itscutting-edge, which stands nearly or quite parallel with thesupporting-face of the stub-rest, tapers from the widest part, which isopen, toward the narrowest end or front, which -is closed, and which iscurved so as to form an arc of a circle, instead of being formed withthe two sides meeting at a sharp angle or V. This construction enablesme to keep this portion of the knife sharp at all times, and also makesit much stronger than if it terminated at a sharp point.

From the cutting-edge the body of the knife or cutter G extends towardthe upper end of the standard A, lying between the two sides,

which extends outward from the standard around its lower end, so as tokeep it in place. The cutter-bar is extended upward by a simplecontinuation of its two sides, which, while lying between the two sidesof the standard A, are sufficiently separated to admit the operatinghandle or lever F.

have large circular openings made in the1n,and eccentric-lugs F projectfrom the sides of the end of the lever h about the thickness of thesides of the cutter-bar at this point, and they enter the openings madein the end of the cutter-bar, so that when the lever is moved about itsfulcrum-pin K the eccentrically-disposed lugs will cause thecutter-barto be moved to or from the stub-rest.

Between the sides of the standard A, below oted or fulerumed a lever, L,which has hinged to its lower part a sharp point, M, that pro jectsbetween the open rear sides of the cutter near its edge. Just above thispoint and about opposite the fulcrum-pin N, upon which the lever turns,is another projecting point, J, which extends between the sides of thecutter-bar, so that it will stand above the chip which is to be cut. a

The upper end. of the lever L is curved so and it is also guided by acurved strap, H, t

The two sides of the head of the cutter-bar the lever F, and behind thecutter-bar, is piv- 9o of the cutter.

that the lever will be actuated by the movement of the cam-lever F.

The operation will then be as follows: The stub in which the kerf is tobe cut is rested against the stub-rest C, and the pressure causes thepawl 12 to engage the teeth of the rack upon the front of the standardA, thus holding the stub-rest at the proper distance from the cutter,the lever of which may be down, as shown in Fig. 1. When the lever F ispressed down,

,as shown in Fig. 1, it strikes a lug or projection, 0, upon the back ofthe lever L and above the fulcrum-pin N, and thus forces the upper endof the lever upward into the rear curved portion of the upper part ofthe cutter-bar and withdraws the point M between the sides of standardA. The lever F being then raised, the. eccentrm-lugs F will act upon theupper end of the cutter-bar, forcing it down between the guides and theguiding'strap H, so that its lower edge makes a cutin the stub, which issupported in opposition to it, as before described. At the same time thecurved head of the cutter-bar acts to force the upper end of the lever Lbackward, and it thus projects the point M forward into the stub, whilethe cutter is advanced upon each side of the point, so as to cut thechip. The continued movement of the lever L acts to raise the point M,and thus split off the chip which has been cut, and which is. nowinclosedbetween the sides \Vhen the lever F is again pressed down, itstrikes upon the upper end of the lever L, or upon the lug O, and thusforces the upper end inward, and this action causes the point J, whichprojects between the sides of the cutter and above the chip, to forcethe latter downward and out of the cutter, so as to leave it free tomake a new cut, the point M being again withdrawn, as before described.The slip which is to be fitted into the cut in the stub thus made isshaped by means of the cutter P, which has two sides formed similar tothe sides of the cutter G, both ends of this cutter being made open, asshown in Fig. 3.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, isa 1. A graftingtool consisting of a standardhaving a cutter guided upon it so as to move parallel to one side, alever or handle by which it is operated, and a toothed rack formed uponthe opposite end of the standard, in combination with the slotted plateor slide having a curved stub-support, said slide guided upon thestandard so as to move over the rack, and a pawl by which the slide andstub-support may be held at any point desired with relation to thecutters, substantially as herein described.

2. The standard upon which the cutter is guided and operated, having atoothed rack upon one edge and a slide fitted to move over this rack, incombination with a stubsupport having a plate projecting from its back,ex-

tending downward between the sides of the guides, and having apawl-point formed atits lower end to engage the rack when pressureisbrought upon the stub-rest, substantially as herein described.

3. The sliding guide moving over the rack or toothed portion of thecutter-standard, projecting beyond the serrated edge of the standard andhaving a pin passing through the outer portion, as shown, in combinationwith the stub-support and plate projecting from the back and enteringthe open slot in the guide, said plate having a semicircular notchformed inone edge and engaging the pin in the slot, and having apawl-point formed upon the opposite lower angle to engage the teeth ofthe standard, substantially as herein described.

4. In a, grafting-tool, the standard formed in a single piece havingcorrugations or teeth formed upon the edge near one end and a stubsupport fixed to slide over and engage with these teeth, so as to beheld in any desired position, the opposite end of the standard beingdivided so as to form two parallel sides between which the cutter-bar issupported, said cutter having circular openings made in its head, incombination with a lever having an eccentrically-shaped head or lugswhich fit said opening, and by which the cutter is reciprocated betweenthe parallel sides of the standard, substantially as herein described.

5. In a grafting-too], the standard having one end formed with teeth toengage an adjustable sliding stubsupport and the opposite end formedwith two parallel sides between which the cutter bar is reciprocated andguided, in combination with a projecting curved strip, H, extendingoutward from the sides of the standard and acting asa guide for thelower part of the cutter-bar, substantially as herein described.

6. The cutter-bar and eccentrically-operating lever fulcrumed and guidedbetween the sides of the twopart standard, in combination with the leverL, fulcrumed to the standard and having a projecting point, M, pivotedto its lower end, substantially as herein de scribed.

7. The lever L, fulcrumed between the sides of the standard and havingthe projecting point M pivoted to its lower end, in combination with thepoint J, projecting rigidly from the lever L, so as to enter between thesides of the cutter-bar, substantially as herein described.

8. The lever L, fulcrumed between the sides of the standard, having theprojecting points M and J, as shown, and the lug 0 upon its rearportion, in combination with the eccentricallymoving and curvedcutter-bar, against which the upper end of the lever rests so as to beoperated thereby, substantially as herein described. I

9. In a grafting-tool, the standard having the reciprocating cutterguided so as to move ter as the latter is moved into the stub,substantially as herein described.

y In Witness whereof I have hereunto set my hand.

CHARLES XV. HOIT.

\Vitn (asses:

J. G. TUBBs, O. A. HoIT.

